Alex Mustard / A small fish, probably a Driftfish (Nomeidae), sheltering inside a Salp (Salpa sp.) in open water as part of the plankton, Bitung, North Sulawesi, Indonesia, Lembeh Strait.

Franco Banfi / Man-of-war fish (Nomeus gronovi) living within deadly tentacles of Portuguese man o' war (Physalia physalis), to whose toxin it is ten times more resistant than other fish, at sea surface. Domi...

Franco Banfi / Man-of-war fish (Nomeus gronovi) living within deadly tentacles of Portuguese man o' war (Physalia physalis), to whose toxin it is ten times more resistant than other fish, at sea surface. Domi...

Franco Banfi / Man-of-war fish (Nomeus gronovi) living within deadly tentacles of Portuguese man o' war (Physalia physalis), to whose toxin it is ten times more resistant than other fish, at sea surface. Domi...

Franco Banfi / Man-of-war fish (Nomeus gronovi) living within deadly tentacles of Portuguese man o' war (Physalia physalis), to whose toxin it is ten times more resistant than other fish, at sea surface. Domi...

Magnus Lundgren / Driftfish (Nomeidae sp,) hiding in a huge jellyfish, Balayan Bay, off Anilao, Batangas, Philippines, Pacific Ocean

Magnus Lundgren / Driftfish (Nomeidae sp) hiding in a huge jellyfish, Batangas, Philippines, Pacific Ocean